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UC2844BD from ON,ON Semiconductor

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15.625ms

UC2844BD

Manufacturer: ON

HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER

Partnumber Manufacturer Quantity Availability
UC2844BD ON 685 In Stock

Description and Introduction

HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER The UC2844BD is a high-performance current-mode PWM controller manufactured by ON Semiconductor.  

### **Specifications:**  
- **Topology:** Current-mode PWM control  
- **Operating Frequency:** Up to 500 kHz  
- **Output Drive Current:** ±1 A (peak)  
- **Supply Voltage Range:** 8.5V to 30V (start-up), 7.6V to 30V (operating)  
- **Duty Cycle Range:** 0% to 100%  
- **Error Amplifier Bandwidth:** 1 MHz  
- **Soft-Start Capability:** Yes  
- **Undervoltage Lockout (UVLO):** 16V (on), 10V (off)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** SOIC-8  

### **Descriptions:**  
The UC2844BD is designed for offline and DC-DC converter applications, providing precise duty cycle control with current-mode operation. It includes features like cycle-by-cycle current limiting, adjustable oscillator frequency, and a totem-pole output stage for driving power MOSFETs efficiently.  

### **Features:**  
- **Current-Mode Operation:** Improves loop response and simplifies compensation.  
- **Automatic Feed-Forward Compensation:** Enhances line regulation.  
- **Latching PWM for Cycle-by-Cycle Current Limiting:** Prevents output overload.  
- **Internal Trimmed Bandgap Reference:** Ensures stable voltage regulation.  
- **High-Current Totem-Pole Output:** Optimized for driving power MOSFETs.  
- **Low Start-Up and Operating Current:** Reduces power consumption.  

This device is widely used in power supply designs, including flyback, forward, and boost converters.

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